Styles and Themes

Android Programming (3rd Edition)
1

f I change the switch: MODE_NIGHT_YES to NO, nothing is changing in the app
I cannot find a sample wirh the java Nerd 4 construction.
An InitApplication exist in the directory, but where should I implement following lines to call the InitApplication? In an application I have sample code but not in use of a a fragment

**Sample Code**
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (InitApplication.getInstance().isNightModeEnabled()) {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        } else {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
        setContentView(R.layout.activity_main);

MainAcitivity
public class Activity_MindX extends SingleFragmentActivity
{
private final String LOG = this.getClass().getName();

@Override
protected Fragment createFragment() {
    return new FragmentMenuMindX();
}
// ################################################
public void onCardSetUpdated(CardSet cardset) {
// ################################################
	FragmentManager fm = getSupportFragmentManager();
	fm.findFragmentById(R.id.fragmentContainer);
	}

in the Fragment

public class FragmentMenuMindX extends Fragment implements OnClickListener,
	OnChartValueSelectedListener,
	SeekBar.OnSeekBarChangeListener,
	MindXconstants, MessageConst, DialogConstants {

…

int the FragemtActivity

@TargetApi(11)
@Override
// ################################################
public View onCreateView(LayoutInflater inflater, ViewGroup parent,
		Bundle savedInstanceState) {
// ################################################
	**AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);**
	View v = inflater.inflate(R.layout.activity_menu_mind_x, parent, false